<template>
	<view class="uni-stat__select">
		<span v-if="label" class="uni-label-text hide-on-phone">{{label + '：'}}</span>
		<view class="uni-stat-box" :class="{'uni-stat__actived': current}">
			<view class="uni-select" :class="{'uni-select--disabled':disabled}">
				<view class="uni-select__input-box" @click="toggleSelector">
					<view v-if="current" class="uni-select__input-text">{{current}}</view>
					<view v-else class="uni-select__input-text uni-select__input-placeholder">{{typePlaceholder}}</view>
					<uni-icons v-if="current && clear" type="clear" color="#c0c4cc" size="24" @click="clearVal" />
					<uni-icons v-else :type="showSelector? 'top' : 'bottom'" size="14" color="#999" />
				</view>
				<view class="uni-select--mask" v-if="showSelector" @click="toggleSelector" />
				<view class="uni-select__selector" v-if="showSelector" style="z-index: 100;">
					<view class="uni-popper__arrow"></view>
					<scroll-view scroll-y="true" class="uni-select__selector-scroll" >
						<view class="uni-select__selector-empty" v-if="mixinDatacomResData.length === 0" >
							<text>{{emptyTips}}</text>
						</view>
						<view v-else>
							<!-- 	<text :key="index" @click="change(item)"
								:class="{'uni-select__selector__disabled': item.disable}">{{formatItemName(item)}}</text> -->
							<view class="" v-for="(item,index) in menu_list" :key="index"
								v-if="item[association_id]==0||item.expand==true">
								<view :class="mane_index==index?'banmi_menu_selected':'banmi_menu'"
									:style="item[association_id] > 0 ? 'background-color: #F5F5F5;' :'' ">
									<view class="banmi_flex  " style="align-items: center;height: 40px;"
										:class="item.depth==1?'m-l-10':item.depth==2?'m-l-20':item.depth==3?'m-l-30':item.depth==4?'m-l-40':'' ">
										<view @click="on_tab(index)" v-if="item.children.length>0" class=""
											style="margin-top: 10rpx;">
										 
												<icon-right v-if="item.depth_to!=true" size="40" color="#333"></icon-right>
												<icon-down v-else size="40" color="#333"></icon-down>
										</view>

										<!-- 	<icon-park v-if="item.icon" :type="item.icon" theme="outline"
											style="font-size: 16px;margin-top: 5px;" /> -->
										<view @click="on_tab1(index)" class="yihang"
											style="font-size: 14px;margin-left: 10rpx;">
											{{item.name}}
										</view>
									</view>

								</view>
							</view>

						</view>
					</scroll-view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	/**
	 * DataChecklist 数据选择器
	 * @description 通过数据渲染的下拉框组件
	 * @tutorial https://uniapp.dcloud.io/component/uniui/uni-data-select
	 * @property {String} value 默认值
	 * @property {Array} localdata 本地数据 ，格式 [{text:'',value:''}]
	 * @property {Boolean} clear 是否可以清空已选项
	 * @property {Boolean} emptyText 没有数据时显示的文字 ，本地数据无效
	 * @property {String} label 左侧标题
	 * @property {String} placeholder 输入框的提示文字
	 * @property {Boolean} disabled 是否禁用
	 * @event {Function} change  选中发生变化触发
	 */

	export default {
		name: "uni-stat-select",
		mixins: [uniCloud.mixinDatacom || {}],
		data() {
			return {
				showSelector: false,
				current: '',
				mixinDatacomResData: [],
				apps: [],
				channels: [],
				mane_index: 0,
				menu_list: []
			};
		},
		components: {

		},
		props: {
			localdata: {
				type: Array,
				default () {
					return []
				}
			},
			main_id: {
				type: [String, Number],
				default: ''
			},
			association_id: {
				type: [String, Number],
				default: ''
			},
			value: {
				type: [String, Number],
				default: ''
			},
			parent_id: {
				type: [String, Number],
				default: ''
			},
			modelValue: {
				type: [String, Number],
				default: ''
			},
			label: {
				type: String,
				default: ''
			},
			placeholder: {
				type: String,
				default: '请选择'
			},
			emptyTips: {
				type: String,
				default: '无选项'
			},
			clear: {
				type: Boolean,
				default: true
			},
			defItem: {
				type: Number,
				default: 0
			},
			disabled: {
				type: Boolean,
				default: false
			}
		},
		created() {

			this.menu_list = this.localdata
			if (this.parent_id > 0) {
			 
				for (var i = 0; i < this.menu_list.length; i++) {
					if (this.menu_list[i][this.main_id] == this.parent_id) {
						this.mane_index = i
						var parent_ids = this.menu_list[i][this.association_id]
						this.menu_list[i]['depth_to'] = true;
						if (parent_ids > 0) {
							this.menu_selected(parent_ids);
						}
					}
				}
			}
		
			if (this.collection && !this.localdata.length) {
				this.mixinDatacomEasyGet()
			}
		},
		computed: {

			typePlaceholder() {
				const text = {
					'opendb-stat-app-versions': '版本',
					'opendb-app-channels': '渠道',
					'opendb-app-list': '应用'
				}
				const common = this.placeholder
				const placeholder = text[this.collection]
				return placeholder ?
					common + placeholder :
					common
			}
		},
		watch: {
			localdata: {
				immediate: true,
				handler(val, old) {
					if (Array.isArray(val) && old !== val) {
						this.mixinDatacomResData = val
					}
				}
			},
			// #ifndef VUE3
			value() {
				this.initDefVal()
			},
			// #endif
			// #ifdef VUE3
			modelValue() {
				this.initDefVal()
			},
			// #endif
			mixinDatacomResData: {
				immediate: true,
				handler(val) {
					if (val.length) {
						this.initDefVal()
					}
				}
			}
		},
		methods: {
			menu_selected(parent_id) {
				for (var i = 0; i < this.menu_list.length; i++) {
					if (parent_id == this.menu_list[i][this.main_id]) {
						var parent_ids = this.menu_list[i][this.association_id]
						this.menu_list[i]['depth_to'] = true;
						if (parent_ids > 0) {
							this.menu_selected(parent_ids);
						}
					}
					if (parent_id == this.menu_list[i][this.association_id]) {
						this.menu_list[i]['expand'] = true;
					}

				}
			},
			initDefVal() {
				let defValue = ''
				if ((this.value || this.value === 0) && !this.isDisabled(this.value)) {
					defValue = this.value
				} else if ((this.modelValue || this.modelValue === 0) && !this.isDisabled(this.modelValue)) {
					defValue = this.modelValue
				} else {
					let strogeValue
					if (this.collection) {
						strogeValue = uni.getStorageSync(this.last)
					}
					if (strogeValue || strogeValue === 0) {
						defValue = strogeValue
					} else {
						let defItem = ''
						if (this.defItem > 0 && this.defItem < this.mixinDatacomResData.length) {
							defItem = this.mixinDatacomResData[this.defItem - 1].value
						}
						defValue = defItem
					}
					this.emit(defValue)
				}
				const def = this.mixinDatacomResData.find(item => item.value === defValue)
				this.current = def ? this.formatItemName(def) : ''
			},

			/**
			 * @param {[String, Number]} value
			 * 判断用户给的 value 是否同时为禁用状态
			 */
			isDisabled(value) {
				let isDisabled = false;

				this.mixinDatacomResData.forEach(item => {
					if (item.value === value) {
						isDisabled = item.disable
					}
				})

				return isDisabled;
			},

			clearVal() {
				this.emit('')
				if (this.collection) {
					uni.removeStorageSync(this.last)
				}
			},
			on_tab1(index) {
				let that = this;
				this.mane_index = index;
				var num = this.menu_list[index]['children'].length
				var id = this.menu_list[index]['id'];
				var value = this.menu_list[index]['name'];
				this.emit(value, this.menu_list[index])
			},
			on_tab(index, url) {

				let that = this;
				var num = this.menu_list[index]['children'].length
				var id = this.menu_list[index][this.main_id];
				var value = this.menu_list[index]['menu_name'];

				if (num == 0) { //没有二级列表
					this.mane_index = index;
					this.emit(value, this.menu_list[index])
					return
				}
				var parent_id = this.menu_list[index][this.main_id]; //我的id
				var expand = this.menu_list[index]['expand'];
				var menu_id = this.menu_list[index][this.association_id]; //我的上级
				var depth = this.menu_list[index]['depth']; //层级
				this.menu_list[index]['depth_to'] = !this.menu_list[index]['depth_to'];
				this.menu_list.forEach(function(item, index, arr) {
					if (item['expand'] == true) { //已展开，闭合
						if (parent_id != item[that.main_id] && item[that.association_id] != menu_id && depth < 2) {
							item['expand'] = false;
						} else {
							if (item[that.association_id] == parent_id) {
								item['expand'] = false;
							}
						}
					} else {
						item['expand'] = item[that.association_id] == parent_id ? true : false;
					}

					if (menu_id == 0 && menu_id != item[that.main_id] && parent_id != item[that.main_id]) {
						item['depth_to'] = false;
					}
					if (item['depth_to'] && menu_id > 0) {
						if (menu_id == item[that.association_id] && parent_id != item[that.main_id]) {
							item['depth_to'] = false;
						}
					}

					arr[index] = item;
				});




				this.$forceUpdate()





			},
			change(item) {
				if (!item.disable) {
					// this.showSelector = false
					this.current = this.formatItemName(item)
					this.emit(item.value)
				}
			},
			emit(val, find) {
				this.showSelector = false
				this.$emit('change', val, find)
				// this.$emit('input', val,find)
				// this.$emit('update:modelValue', val,find)
				// if (this.collection) {
				// 	uni.setStorageSync(this.last, val)
				// }
			},

			toggleSelector() {
				if (this.disabled) {
					return
				}

				this.showSelector = !this.showSelector
			},
			formatItemName(item) {
				console.log("item: " + JSON.stringify(item));
				let {
					text,
					value,
					channel_code,
					menu_name
				} = item
				channel_code = channel_code ? `(${channel_code})` : ''
				return this.collection.indexOf('app-list') > 0 ?
					`${menu_name}(${value})` :
					(
						menu_name ?
						menu_name :
						`未命名${channel_code}`
					)
			}
		}
	}
</script>

<style lang="scss">
	$uni-base-color: #6a6a6a !default;
	$uni-main-color: #333 !default;
	$uni-secondary-color: #909399 !default;
	$uni-border-3: #e5e5e5;

	.banmi_menu_selected {
		display: flex !important;
		justify-content: space-between;
		padding: 0px 10px;
		height: 40px;
		background-color: #FAFAD2 !important;
		color: #000;
		align-items: center !important;
		border-bottom: 2rpx solid #D3D3D3;

	}

	.banmi_menu {
		padding: 0px 10px;
		display: flex;
		justify-content: space-between;
		align-items: center !important;
		background-color: #fff !important;
		color: #000;
		height: 40px;
		border-bottom: 2rpx solid #D3D3D3;
	}

	/* #ifndef APP-NVUE */
	@media screen and (max-width: 500px) {
		.hide-on-phone {
			display: none;
		}
	}

	/* #endif */
	.uni-stat__select {
		display: flex;
		align-items: center;
		// padding: 15px;
		cursor: pointer;
		width: 100%;
		flex: 1;
		box-sizing: border-box;
	}

	.uni-stat-box {
		width: 100%;
		flex: 1;
	}

	.uni-stat__actived {
		width: 100%;
		flex: 1;
		// outline: 1px solid #2979ff;
	}

	.uni-label-text {
		font-size: 14px;
		font-weight: bold;
		color: $uni-base-color;
		margin: auto 0;
		margin-right: 5px;
	}

	.uni-select {
		font-size: 14px;
		border: 1px solid $uni-border-3;
		box-sizing: border-box;
		border-radius: 4px;
		padding: 0 5px;
		padding-left: 10px;
		position: relative;
		/* #ifndef APP-NVUE */
		display: flex;
		user-select: none;
		/* #endif */
		flex-direction: row;
		align-items: center;
		border-bottom: solid 1px $uni-border-3;
		width: 100%;
		flex: 1;
		height: 35px;

		&--disabled {
			background-color: #f5f7fa;
			cursor: not-allowed;
		}
	}

	.uni-select__label {
		font-size: 16px;
		// line-height: 22px;
		height: 35px;
		padding-right: 10px;
		color: $uni-secondary-color;
	}

	.uni-select__input-box {
		height: 35px;
		position: relative;
		/* #ifndef APP-NVUE */
		display: flex;
		/* #endif */
		flex: 1;
		flex-direction: row;
		align-items: center;
	}

	.uni-select__input {
		flex: 1;
		font-size: 14px;
		height: 22px;
		line-height: 22px;
	}

	.uni-select__input-plac {
		font-size: 14px;
		color: $uni-secondary-color;
	}

	.uni-select__selector {
		/* #ifndef APP-NVUE */
		box-sizing: border-box;
		/* #endif */
		position: absolute;
		top: calc(100% + 12px);
		left: 0;
		width: 100%;
		background-color: #FFFFFF;
		border: 1px solid #EBEEF5;
		border-radius: 6px;
		box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
		z-index: 3;
		padding: 4px 0;
	}

	.uni-select__selector-scroll {
		/* #ifndef APP-NVUE */
		max-height: 200px;
		box-sizing: border-box;
		/* #endif */
	}

	.uni-select__selector-empty,
	.uni-select__selector-item {
		/* #ifndef APP-NVUE */
		display: flex;
		cursor: pointer;
		/* #endif */
		line-height: 35px;
		font-size: 14px;
		text-align: center;
		/* border-bottom: solid 1px $uni-border-3; */
		padding: 0px 10px;
	}

	.uni-select__selector-item:hover {
		background-color: #f9f9f9;
	}

	.uni-select__selector-empty:last-child,
	.uni-select__selector-item:last-child {
		/* #ifndef APP-NVUE */
		border-bottom: none;
		/* #endif */
	}

	.uni-select__selector__disabled {
		opacity: 0.4;
		cursor: default;
	}

	/* picker 弹出层通用的指示小三角 */
	.uni-popper__arrow,
	.uni-popper__arrow::after {
		position: absolute;
		display: block;
		width: 0;
		height: 0;
		border-color: transparent;
		border-style: solid;
		border-width: 6px;
	}

	.uni-popper__arrow {
		filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.03));
		top: -6px;
		left: 10%;
		margin-right: 3px;
		border-top-width: 0;
		border-bottom-color: #EBEEF5;
	}

	.uni-popper__arrow::after {
		content: " ";
		top: 1px;
		margin-left: -6px;
		border-top-width: 0;
		border-bottom-color: #fff;
	}

	.uni-select__input-text {
		// width: 280px;
		width: 100%;
		color: $uni-main-color;
		white-space: nowrap;
		text-overflow: ellipsis;
		-o-text-overflow: ellipsis;
		overflow: hidden;
	}

	.uni-select__input-placeholder {
		color: $uni-base-color;
		font-size: 12px;
	}

	.uni-select--mask {
		position: fixed;
		top: 0;
		bottom: 0;
		right: 0;
		left: 0;
	}
</style>